PARIS, June 8 (Reuters) - France and Germany were unable to continue their fighter jet project, as German authorities decided it was not possible for the companies involved to continue, the Elysee said on Monday.

German Chancellor Friedrich Merz and French President Emmanuel Macron discussed the project in Montenegro last week and concluded there was no way of breaking months of deadlock between the arms firms involved in the plan, the officials said.

"The German authorities considered that it was not possible to put further pressure on the companies concerned," the Elysee said in a statement.

"The French authorities will continue to encourage our companies and armed forces to explore ways and means of pursuing ambitious European projects that are consistent with our national security interests," it added.